From 15689c3c819d1d659cff464f427f398758a683de Mon Sep 17 00:00:00 2001
From: Ben Skeggs <bskeggs@redhat.com>
Date: Thu, 3 Oct 2013 09:59:16 +1000
Subject: [PATCH] drm/nouveau/core: split lock into list+exec and enable
 refcount locks

This fixes a reported locking inversion when interacting with the DRM
core's vblank routines.

Reviewed-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
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